1349561798 has 16 divisors (see below), whose sum is σ = 2201650416. Its totient is φ = 616706400.

The previous prime is 1349561783. The next prime is 1349561821. The reversal of 1349561798 is 8971659431.

It is a super-3 number, since 3×1349561798³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254336 + ... + 259587.

It is an arithmetic number, because the mean of its divisors is an integer number (137603151).

Almost surely, 2^1349561798 is an apocalyptic number.

1349561798 is a deficient number, since it is larger than the sum of its proper divisors (852088618).

1349561798 is a wasteful number, since it uses less digits than its factorization.

1349561798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514039.

The product of its digits is 1632960, while the sum is 53.

The square root of 1349561798 is about 36736.3824838538. The cubic root of 1349561798 is about 1105.0898551720.

The spelling of 1349561798 in words is "one billion, three hundred forty-nine million, five hundred sixty-one thousand, seven hundred ninety-eight".